From 64756a9a30d556e3d949123bde099c66a5d627f8 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 22 Sep 2018 00:38:41 +0200 Subject: [PATCH] apm821xx: net: emac: fix fixed-link setup for the RTL8363SB switch On the Netgear WNDAP620, the emac ethernet isn't receiving nor xmitting any frames from/to the RTL8363SB (identifies itself as a RTL8367RB). This is caused by hardware not knowing the right forced link settings (speed, duplex, pause, etc.) settings. Signed-off-by: Christian Lamparter --- ...ed-link-setup-for-the-RTL8363SB-swit.patch | 48 +++++++++++++++++++ .../701-powerpc_ibm_apm82181_phyclk_fix.patch | 2 +- 2 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 target/linux/apm821xx/patches-4.14/050-net-emac-fix-fixed-link-setup-for-the-RTL8363SB-swit.patch diff --git a/target/linux/apm821xx/patches-4.14/050-net-emac-fix-fixed-link-setup-for-the-RTL8363SB-swit.patch b/target/linux/apm821xx/patches-4.14/050-net-emac-fix-fixed-link-setup-for-the-RTL8363SB-swit.patch new file mode 100644 index 0000000000..05e29f963e --- /dev/null +++ b/target/linux/apm821xx/patches-4.14/050-net-emac-fix-fixed-link-setup-for-the-RTL8363SB-swit.patch @@ -0,0 +1,48 @@ +From 08e39982ef64f800fd1f9b9b92968d14d5fafa82 Mon Sep 17 00:00:00 2001 +From: Christian Lamparter +Date: Mon, 17 Sep 2018 17:22:40 +0200 +Subject: net: emac: fix fixed-link setup for the RTL8363SB switch + +On the Netgear WNDAP620, the emac ethernet isn't receiving nor +xmitting any frames from/to the RTL8363SB (identifies itself +as a RTL8367RB). + +This is caused by the emac hardware not knowing the forced link +parameters for speed, duplex, pause, etc. + +This begs the question, how this was working on the original +driver code, when it was necessary to set the phy_address and +phy_map to 0xffffffff. But I guess without access to the old +PPC405/440/460 hardware, it's not possible to know. + +Signed-off-by: Christian Lamparter +Signed-off-by: David S. Miller +--- + drivers/net/ethernet/ibm/emac/core.c | 15 ++++++++++----- + 1 file changed, 10 insertions(+), 5 deletions(-) + +--- a/drivers/net/ethernet/ibm/emac/core.c ++++ b/drivers/net/ethernet/ibm/emac/core.c +@@ -2671,12 +2671,17 @@ static int emac_init_phy(struct emac_ins + if (of_phy_is_fixed_link(np)) { + int res = emac_dt_mdio_probe(dev); + +- if (!res) { +- res = of_phy_register_fixed_link(np); +- if (res) +- mdiobus_unregister(dev->mii_bus); ++ if (res) ++ return res; ++ ++ res = of_phy_register_fixed_link(np); ++ dev->phy_dev = of_phy_find_device(np); ++ if (res || !dev->phy_dev) { ++ mdiobus_unregister(dev->mii_bus); ++ return res ? res : -EINVAL; + } +- return res; ++ emac_adjust_link(dev->ndev); ++ put_device(&dev->phy_dev->mdio.dev); + } + return 0; + } diff --git a/target/linux/apm821xx/patches-4.14/701-powerpc_ibm_apm82181_phyclk_fix.patch b/target/linux/apm821xx/patches-4.14/701-powerpc_ibm_apm82181_phyclk_fix.patch index 7f630a3c2a..ced284ee3b 100644 --- a/target/linux/apm821xx/patches-4.14/701-powerpc_ibm_apm82181_phyclk_fix.patch +++ b/target/linux/apm821xx/patches-4.14/701-powerpc_ibm_apm82181_phyclk_fix.patch @@ -30,7 +30,7 @@ #endif } -@@ -2879,6 +2888,7 @@ static int emac_init_config(struct emac_ +@@ -2884,6 +2893,7 @@ static int emac_init_config(struct emac_ if (of_device_is_compatible(np, "ibm,emac-apm821xx")) { dev->features |= (EMAC_APM821XX_REQ_JUMBO_FRAME_SIZE | EMAC_FTR_APM821XX_NO_HALF_DUPLEX | -- 2.25.1